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Tesla Braking Issue Spurs Second U.S. Probe Related to Autopilot

  • NHTSA investigation involves an estimated 416,000 vehicles
  • Agency is also scrutinizing how Autopilot handles crash scenes
A Tesla Model 3 automobile in California, U.S.

A Tesla Model 3 automobile in California, U.S.

Photographer: David Paul Morris/Bloomberg
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The U.S. National Highway Traffic Safety Administration opened its second defect investigation related to Tesla Inc.’s Autopilot, subjecting more scrutiny to the carmaker’s driver-assistance technology.

The agency said Thursday it’s launching a preliminary evaluation of unexpected braking by Tesla Model 3 sedans and Model Y sport utility vehicles. NHTSA estimates that the investigation covers about 416,000 cars and said it has received 354 complaints related to the issue in the past nine months.